Pain-related thinking was linked to treatment response in women with fibromyalgia
A secondary trial analysis linked changes in threatening thoughts about pain and fear of movement with differences in treatment response. It does not establish that changing these factors caused better outcomes.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Among women with fibromyalgia, changes in threatening thoughts about pain and fear of movement were related to how the experimental treatment compared with standard care on quality of life and functioning. Pain intensity, sleep quality and baseline measurements did not show significant modifying effects. These response patterns remain exploratory rather than established explanations of treatment benefit.
This was a secondary analysis, and the authors call for longer-term confirmation. The abstract's wording about score-change thresholds is difficult to interpret, so those thresholds cannot support a clear practical rule.
What a response modifier means
A modifier is a factor associated with a different treatment effect. Here, researchers examined whether treatment differences in a questionnaire covering fibromyalgia-related quality of life and functioning varied alongside changes in psychological and behavioral measures.
Which factors remained uncertain
Pain catastrophizing means interpreting pain in highly threatening terms; fear of movement describes apprehension about moving. Their associations do not establish causation. Nonsignificant interactions for pain intensity and sleep quality do not prove those factors are irrelevant.
The original publication
Pain Catastrophization and Fear of Movement Are Potential Moderators for Response to Treatment in Women With Fibromyalgia: Secondary Analyses of Randomized Controlled Trial.
Araya-Quintanilla F, Gutiérrez-Espinoza H, Salazar-Méndez J et al.
Arch Phys Med Rehabil · 2026
- PubMed ID
- 40759252
- Record checked
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